Where does “ieuner” come from?
ieuner (Middle French) comes from Old French joner, from Latin iēiūnō, from Latin iēiūnus, from Latin iaiūnus, from Proto-Italic jagjūnos, from Proto-Indo-European Hyeh₂ǵ-yu-, from Proto-Indo-European Hyeh₂ǵ-ye/o- — to sacrifice.
ieuner (Middle French): to fast
Ancestry of “ieuner”, step by step